Multiple QNX Products contain a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service condition on the targeted system. Updates are available.

Description

A vulnerability in processing certain packets by multiple QNX products could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.

The vulnerability is due to a memory corruption error while handling a device file specified by the user. An attacker could exploit this vulnerability by sending crafted packets to the targeted system. A successful exploit could allow the attacker to cause a DoS condition.

The vendor has confirmed this vulnerability and released updated software.

Warning Indicators

The following products running on QNX Neutrino 6.5.0 are vulnerable:

Phrelay: All versions

Phwindows: All versions

Phditto: All versions

IntelliShield Analysis

To exploit this vulnerability the attacker would need to send crafted packets to the targeted system. Depending on the network configuration, the attacker would likely need access to trusted, internal networks.

The vendor has scored for an availability impact in its CVSS scoring, however given the nature of the vulnerability, code execution is possible.

Vendor Announcements

QNX has released a security advisory at the following link: CVE-2013-2688

ICS-CERT has released a security advisory at the following link: ICSA-13-189-01

Impact

An unauthenticated, remote attacker could exploit this vulnerability to terminate the affected system abruptly, resulting in a DoS condition.

Technical Information

The vulnerability exists due to a memory corruption error while handling crafted data packets by the affected software.

An unauthenticated, remote attacker could exploit this vulnerability by sending crafted data packets. Processing such packets could cause the application to copy the user data into an insufficiently sized destination buffer, resulting in a buffer overflow. This could affect Phrelay, a process that is used for remote connectivity with Phindows and Phditto clients. The attacker could leverage the buffer overflow to terminate the affected software abruptly, resulting in a DoS condition.

Safeguards

Administrators are advised to apply the appropriate updates.

Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

The security vulnerability applies to the following combinations of products.

Primary Products:

QNX Software Systems Ltd.

QNX Neutrino RTOS

6.5.0 Base

Associated Products:

N/A

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